The Boy Crazy Kunoichi

Boy Crazy.

"Having attraction to multiple males -- sometimes several at once. Someone who is boy crazy will typically admit attraction to most males who enter their life at some point. The attraction is usually mutual but brief. The boy crazy person changes his/her mind about the boy(s); and the boy(s) that are subject to said "crazy," usually have either no interest in someone that is boy crazy, or has gotten what he's wanted and moves on. "Boy crazy" is often taken as an insult." (Urban Dictionary)

Often , not always